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#!/bin/sh -efu
#
# Check legacy code used for obtaining syscall number, arguments,
# and return value when modern ptrace API was not available yet.
#
# Copyright (c) 2017-2021 Dmitry V. Levin <ldv@strace.io>
# All rights reserved.
#
# SPDX-License-Identifier: GPL-2.0-or-later
. "${srcdir=.}/init.sh"
check_prog grep
$STRACE -d -enone / > /dev/null 2> "$LOG" ||:
grep -x "[^:]*strace: PTRACE_GET_SYSCALL_INFO works" "$LOG" > /dev/null ||
skip_ 'PTRACE_GET_SYSCALL_INFO does not work'
run_prog ../chdir > /dev/null
helper='../../disable_ptrace_get_syscall_info'
$helper $args > /dev/null ||
skip_ "$helper does not work"
$helper $STRACE -d -enone / > /dev/null 2> "$LOG" ||:
grep -x "[^:]*strace: PTRACE_GET_SYSCALL_INFO does not work" "$LOG" > /dev/null ||
fail_ "$helper does not work properly"
> "$LOG" || fail_ "failed to write $LOG"
set -- --trace=chdir -a10 $args
$helper $STRACE -o "$LOG" "$@" > "$EXP" ||
dump_log_and_fail_with "$helper $STRACE $* failed with code $?"
match_diff "$LOG" "$EXP"
helper2='../../disable_ptrace_getregset'
$helper2 $helper $args > /dev/null ||
exit 0 # the second part of the test is not applicable
$helper2 $helper $STRACE -d -enone / > /dev/null 2> "$LOG" ||:
grep -x "[^:]*strace: PTRACE_GET_SYSCALL_INFO does not work" "$LOG" > /dev/null ||
fail_ "$helper2 $helper does not work properly"
> "$LOG" || fail_ "failed to write $LOG"
$helper2 $helper $STRACE -o "$LOG" "$@" > "$EXP" ||
dump_log_and_fail_with "$helper2 $helper $STRACE $* failed with code $?"
match_diff "$LOG" "$EXP"
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